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i modifide my box by cutting part of the box now it puts out twice as much heat but i have a 1970 truck so if you have a pic of the box maybe i can see if its the same
Originally posted by mil1ion As an experience Cold weather climate person, I would suggest that you be careful when using cardboard.
1st : You have to make sure you have zoned holes otherwise if it gets real cold,you will freeze up an area of a rad while heat flows through the other areas which will cause a blow out of coolant.
Trust me, it can happen and has.
I would really recommend buying a "Winter Front" Grille cover to put on your truck,that is if you aren't worried about the snaps that attach to the surround to hold it on.
These front allow air to still flow through the rad but not the REAL COLD air. Thus, allowig for warmer air though the heater.
Do you know anyone that makes the winter front grill cover for 79>'s dennis? They only made them for newer trucks at the three performance shops (and canadian tire) that I called I really wanted one for my truck ;/
Originally posted by DPW Yes they do heat better, alot better, you have a much bigger heater core in a High output heater, I have experienced both and the High Output is the way to go. If you have access to one I would use it. Put a new core in it right away ($42.00) nothing worse than installing a used heater box assembly, then 2 months later it's leaking on the floor and fogging up your windows. If your truck doesn't have AC its not a bad job to change one out.
High out put heaters have smaller heater cores allowing a more constant supply of hot water.
Wrong answer, the heater core in the standard heater measures 6''x6''x2''. The heater core in a High output heater measures
7 3/4''x6''x2''. This is why the assembly for the High output is a little larger to accomadate the larger core,I have them both, and a spare HO.
Two words ( Vintage Air ) Totaly worth the 125.00 you pay, it hooks directly in to your old heater hoses and has heater ducts so you can atatch hoses and run them wherever you want. And also hides nicely under the dash ( unlike the stock heater that takes up floor space... ) I went to a show in canada and seen them demonstrate the heater in an old school bus it was about 35F outside with a windchill of about 20F (freezing) and the truck engine was cold, they started the truck let her run for about 3 min, turnd on the heater and everyone went in the bus, heated it up in about 5 min. Its sweet and I was convinced to buy one, Also plan on puting two 2 1/2" holes in my dash for vents, Just not to sure where I am going to find the vents just yet, but im sure some hotrod magizine will have some nice ones... If you want your moneys worth do it. You can order them online and out of most truck magizines. Thats all I have to say and hope I was of some help.
not to sure about that one.....Because if you have a good fan it will end up cooling off the fan, also if you get to hot a heater core you are risking melting the heater case... been there done that....
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